.box {
    width: 200px;
    height: 200px;
    background-color: #ddd;
    border: 2px solid #e4393c;
    border-radius: 10px;
    background: url("../img/shaniruo.jpg") no-repeat center center;
    background-size: cover;
}

img {
    width: 200px;
    height: 200px;
}